50+ Gift Ideas For Guys Who Are All About That Fit Life

First we counted steps, then we measured heart rate. Now? With the WHOOP Strap 2.0 ($500) we optimize a "performance lifestyle" by tracking five key measurements: heart rate, heart rate variability (HRV), ambient temperature, motion (via 3-axis accelerometer), and on/off wrist detection via capacitive touch sensor. Outcomes are analyzed and actionable recommendations are provided, meaning science will now suggest that your man get better sleep and drink less before bed so you don't have to.